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The Yamaha Exciter 570 has a top speed of 105 miles per hour. The Exciter I had 77.2 horsepower and ran at 7200 RPMs.
I have a 135 Exciter and can do about 40 mph when running good.
The Yamaha Exciter Jet Boat can be purchased through Sea Ray Dealers all across Canada, United States and Puerto Rico. There may be other boat/RV dealerships in your area that may offer the same product at comparable prices. For online shopping, you can purchase the Yamaha Exciter directly from Yamaha.
48hp.@7000rpms
85-90hp
Locksmith or shortwire.
Under the seat in a clear plastic holder.
Don't have a clue, sorry mate :/
98 miles per hour stock. running right!!
From what I have read in the shop manuals for the 1979 and 1980 Exciters, there was a change between those 2 years where the CDI was not interchangeable due to the timing. So, I'm not sure how well it would run if you used one from a 1978 Exciter in a 1981 Exciter, or if you would eventually burn down the motor. However, if you have installed one, and it is working, then that's great.
17.00 HP (12.4 kW)) @ 7500 RPM according to manufacturer specs for 1980
take off the carbs and clean them out with come carb cleaner. Might be the choke cable sticking, or float bowls level is too high